Troubleshooting

Create a new MySQL database for a Rails application

To create a new MySQL database for a Rails application:

Start the MySQL command line client, as shown below. Enter the password for the MySQL root user.

$ mysql -u root -p

At the MySQL prompt, run the following commands. Remember to replace the DBNAME, APPNAME and PASSWORD placeholders with actual values for your database name, application name and database user password.

mysql> CREATE DATABASE IF NOT EXISTS DBNAME_production;
mysql> CREATE DATABASE IF NOT EXISTS DBNAME_development;
mysql> CREATE DATABASE IF NOT EXISTS DBNAME_test;
mysql> GRANT ALL PRIVILEGES on DBNAME_test.* to 'APPNAME'@'localhost' identified by 'PASSWORD';
mysql> GRANT ALL PRIVILEGES on DBNAME_production.* to 'APPNAME'@'localhost';
mysql> GRANT ALL PRIVILEGES on DBNAME_development.* to 'APPNAME'@'localhost';
mysql> FLUSH PRIVILEGES;

Edit the config/database.yml file in your Rails project directory and update the database configuration. You can also copy the database.yml file from a sample or fresh project and modify the database details as needed: